Diaspora API - Register a new application/client and retrieve an access token for your pod

diaspora_api_register_client.sh

#!/bin/bash

echo -n "Name your client (MyBot): "
read client_name

echo -n "Define your pod address (with https://): "
read domain

cookie_file="/tmp/.cookie"
openid_url="$domain/api/openid_connect"
curl_options="-# --cookie-jar $cookie_file --cookie $cookie_file"

resp=$(curl $curl_options $openid_url/clients \
  -d "client_name=$client_name&redirect_uris[]=$domain")

client_id=$(echo $resp |perl -lpe 's/.*"client_id":"([^"]+?)".*$/$1/g')
client_secret=$(echo $resp |perl -lpe 's/.*"client_secret":"([^"]+?)".*$/$1/g')
if [ "$(echo -n $client_id |wc -c)" != "32" ];
then
  echo "Your client_id is invalid!"
  exit 1
fi
if [ "$(echo -n $client_secret |wc -c)" != "64" ];
then
  echo "Your client_secret is invalid!"
  exit 1
fi

params="client_id=$client_id&redirect_uri=$domain&response_type=code&scope=openid%20read%20write&nonce=hi&state=hi"
resp=$(curl $curl_options -L "$openid_url/authorizations/new?$params")

authenticity_token=$(echo $resp |perl -lpe 's/.*name="authenticity_token"\svalue="([^"]+?)".*$/$1/g')
if [ "$(echo -n $authenticity_token |wc -c)" != "88" ];
then
  echo "Your authenticity_token is invalid!"
  exit 1
fi

echo -n "Username ($domain): "
read username
echo -n "Password ($domain): "
read -s password
echo
resp=$(curl $curl_options -L -H "X-CSRF-TOKEN: $authenticity_token" \
  -d "user[username]=$username&user[password]=$password&user[remember_me]=1" \
  "$domain/users/sign_in")

authenticity_token=$(echo $resp |perl -lpe 's/.*name="authenticity_token"\svalue="([^"]+?)".*$/$1/g')
if [ "$(echo -n $authenticity_token |wc -c)" != "88" ];
then
  echo "Your authenticity_token is invalid!"
  exit 1
fi

echo -en "\n\nClient name: $client_name\nDo you want to register this application (y/N)? "
read confirmation

if [ "${confirmation,,}" != "y" ]; then
  echo "Abort."
  exit 1
fi

resp=$(curl $curl_options -H "X-CSRF-TOKEN: $authenticity_token" \
  "$openid_url/authorizations" \
  -d "authenticity_token=$authenticity_token&commit=Approve&approve=true")

auth_code=$(echo $resp |perl -lpe 's/.*\?code=([^"]+?)".*$/$1/g')
if [ "$(echo -n $auth_code |wc -c)" != "64" ];
then
  echo $auth_code
  echo "Your auth_code is invalid!"
  exit 1
fi

resp=$(curl $curl_options "$openid_url/access_tokens" \
  -d "grant_type=authorization_code&client_id=$client_id&client_secret=$client_secret&redirect_uri=$domain&code=$auth_code")

echo -e "\n\nClient ID: $client_id\nClient secret: $client_secret\nAuth code: $auth_code\n\n"
echo $resp

# clean up
rm $cookie_file